Sound impressions IMO:
The sound is more like 1.2.5 but lesser bass. I'm so loving the sound.(EQ OFF)
Soundstage seems to be a bit wider.
Gapless set to 5/10secs is more like a crossfade now.
Still no hiss at all gain level.(DX50/R-50 unamped)

Interface:
Touch screen is now less sensitive
Scanning time minimize
A lot menu improvements(new wallpaper is really cool)
No more scanning media every time your turn on the dap.

My very first update and I love it!!Edited by cub0ne - 12/9/13 at 3:02am

Hi,
Thank you for your email.
We used the WM8740's digital attenuation to control the volume. for example, it can reduce the signal voltage from 1.5V to 1V. It isnt reduce the signal from 24bit to 20bit. in other words, both of the 1.5V and 1V signal are 24bit or 16bit. They have the same bit rate.
If you would like to cancel your order, please get back to us ASAP. Your shipment is ready for pick up now.

I tried switching cards and it's so much smoother with the updated scanning function now it's a charm using. The gapless works but it works as a fading out of the previous song into fading in of the next song. I don't mind that functionality, works like a DJ's set.

Hi,
Thank you for your email.
We used the WM8740's digital attenuation to control the volume. for example, it can reduce the signal voltage from 1.5V to 1V. It isnt reduce the signal from 24bit to 20bit. in other words, both of the 1.5V and 1V signal are 24bit or 16bit. They have the same bit rate.
If you would like to cancel your order, please get back to us ASAP. Your shipment is ready for pick up now.

Sincerely
iBasso Audio

I suppose this means that we can lower the volume as much as we want without compromising bit-perfect playback?

@cooperpwc thanks that was the term I was looking for a cross fade. What would bet great is if they could allow us to pick how we want to transition from song to song.

It isn't terrible in 1.2.6 but it isn't right either. The funny thing about V1.2.5 is that sometimes there was a tiny gap and then sometimes it got the gapless perfect. So it seems like they were close to pegging it.

I am definitely enjoying the sound of the new firmware. They seem to have succeeded in widening the soundstage without sucking out the mids as was my complaint in 1.2.3beta. The bass may be a bit stronger than 1.2.5 but it is sounding plenty tight.

To me the sound is great and I don't want to change that on the new firmware. Not crazy about the gapless, it works best for me off. The sound between the X3 and the DX50 is so different now that I see no comparison. The DX50 is much better, IMO.